TY - JOUR
T1 - Evaluation of the CO 2 sequestration capacity for coal fly ash using a flow-through column reactor under ambient conditions
AU - Jo, Ho Young
AU - Ahn, Joon Hoon
AU - Jo, Hwanju
N1 - Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant number: 2009-0076614 ).
PY - 2012/11/30
Y1 - 2012/11/30
N2 - An in-situ CO 2 sequestration method using coal ash ponds located in coastal regions is proposed. The CO 2 sequestration capacity of coal fly ash (CFA) by mineral carbonation was evaluated in a flow-through column reactor under various conditions (solid dosage: 100-330g/L, CO 2 flow rate: 20-80mL/min, solvent type: deionized (DI) water, 1M NH 4Cl solution, and seawater). The CO 2 sequestration tests were conducted on CFA slurries using flow-through column reactors to simulate more realistic flow-through conditions. The CO 2 sequestration capacity increased when the solid dosage was increased, whereas it was affected insignificantly by the CO 2 flow rate. A 1M NH 4Cl solution was the most effective solvent, but it was not significantly different from DI water or seawater. The CO 2 sequestration capacity of CFA under the flow-through conditions was approximately 0.019g CO 2/g CFA under the test conditions (solid dosage: 333g/L, CO 2 flow rate: 40mL/min, and solvent: seawater).
AB - An in-situ CO 2 sequestration method using coal ash ponds located in coastal regions is proposed. The CO 2 sequestration capacity of coal fly ash (CFA) by mineral carbonation was evaluated in a flow-through column reactor under various conditions (solid dosage: 100-330g/L, CO 2 flow rate: 20-80mL/min, solvent type: deionized (DI) water, 1M NH 4Cl solution, and seawater). The CO 2 sequestration tests were conducted on CFA slurries using flow-through column reactors to simulate more realistic flow-through conditions. The CO 2 sequestration capacity increased when the solid dosage was increased, whereas it was affected insignificantly by the CO 2 flow rate. A 1M NH 4Cl solution was the most effective solvent, but it was not significantly different from DI water or seawater. The CO 2 sequestration capacity of CFA under the flow-through conditions was approximately 0.019g CO 2/g CFA under the test conditions (solid dosage: 333g/L, CO 2 flow rate: 40mL/min, and solvent: seawater).
KW - Aqueous mineral carbonation
KW - CO
KW - Coal fly ash
KW - Flow-through column reactor
KW - Sequestration
UR - http://www.scopus.com/inward/record.url?scp=84868485233&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2012.09.020
DO - 10.1016/j.jhazmat.2012.09.020
M3 - Article
C2 - 23062510
AN - SCOPUS:84868485233
SN - 0304-3894
VL - 241-242
SP - 127
EP - 136
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -